cabell



(Nn Model.)

S. G. GABELL LUBRIGATOR.

No. 283,860. Patented Aug. 28, 1883.

UNITED STATES PATENT OFFICE.

SAMUEL G. OABELL, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO FLORA B. CABELL, OF SAME PLACE.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 283,860, dated August 28, 1883.

Application fllenlMnrch 26, 1883. (N0 model.)

To all whom it may concern Be it known that I, SAMUEL G. CABELL, of

Washington, in the District of Columbia, have invented certain new and useful Improvements in Lubricators; and I do hereby declare the gollowing to be a full, clear, and exact descripion of the same, reference being had to the accompanying drawings, forming a part of this, specification, and to the figures and letters of reference marked thereon.

This invention relates particularly to that class of lubricatorsknown as overflow-cups, and it consists in several novel improvements, which I will first describe and then point out particularly in the claims at the end of this specification.

Referring to the accompanying drawings, Figure 1 represents a longitudinal vertical section of an oil-cup constructed in accordance with my invention. Fig. 2 is a similar view of a modified form of cup.

Similar letters of reference in the accompanying drawings indicate the same parts.

A indicates the body of the exterior shell of the cup, preferably of cylindrical form, with its lower end, B, rounded or beveled down toward the center, and having formed with it or connected to it a hollow stem, 0, by which the cup is attached to the steam-chest or other part to be lubricated. b

Arranged within the outer shell, A, and secured to it by a screw-connection, d, at the upper end, is an interior shell, D, adapted to contain the oil or other lubricant. This shell D is of less diameter than the internal diameter of the shell A, and its lower end extends down near to, but not in contact with, the lower end of said shell A, thus leaving a free open space, S, between the two shells at the sides and bottom all around. E represents the upper part or cap of the outer shell, the same being united to the upper projecting portion of he inner shell, D, by ascrew-connection, and caring down upon the upper end of the body of the outer shell. A washelyF, is interposed between the cap and the inner shell or cup to secure a tight joint. The bottom of the innershell, at the center, is provided with a conical perforation, G, in which is adapted to closely fit the lower end of a valve-stem, H, which has near its upper end a screw-threaded portion, h, which works in a correspondingly screw-threaded portion e of the cap E. To the extreme upper end of the stem H is connected at feed-cup, I, which is normally covered by a tightly-fitting cap, J, forced down by a screw-stem, K, working through a yoke, L, secured to flanges in the feed-cup I by screws M M, as shown. By loosening one of the screws M and raising the cap J, so as to clear the flange on feed-cup I, the yoke L can be swung to one side, carrying the cap J with it, thus. permitting oil to be poured into the feed-cup I. [There is a channel, N, leading down through the stem Hfrom the feed-cup I to the interior of the inner shell, D, so that oil poured into the feed-cup will be conducted into the inner shell or oil-reservoir. Provision is thus made for filling the oil-reservoir. A suitable packing-gland, O, preserves a'tight joint between 'the valve-stem and'the cap E.

P represents a cock tapped through both the outer shell, A, and inner shell, D, and having an upwardly-bent pipe, Q, attached to the inner end of its shank, and having also an opening, R, in its shankleading into the space S between the shells, as shown. The valvestem T of the cock P, when screwed in, closes communication between-the space S and the interior of the oil-reservoir D but when screwed out, both the end of the pipe Q and the opening R are uncovered, thus establishing communication between such reservoir and space. I

When the lubricator, constructed as above, and with its inner shell or oil-reservoir filled with oil or other lubricant, is applied to the steam-chest of an engine and steam admitted 'to it, the steam will at once fill the space S and surround the sides and bottom of the oilreservoir, thus thoroughly heating the con tents of said reservoir and bringing it to a condition calculated to insure its ready flow. If now the valve-stem T be screwed outward, steam will pass through opening R and pipe Q into the upper part of the oilrcservoir, andthere will become condensed by contact with the cap E, and the resulting water of condensation will gradually displace the oil in the reservoir, and the oil will pass out through said pipe Q and opening Rinto the steam-space and down 'it is only necessary to enlarge or decrease its cOndensing surface,which can be done by malc ing the cap larger or smaller. When the oil in the reservoir has been entirely displaced'by the water of condensation, the latter may be drawn off and caused to pass down the stem by turning the main valve-stem H so as to raise it from its seat G.

Where there is no pressure of steam in the space S, oil may be fed by gravity from the reservoir down through the stem 0 by adjust ment of the valve-stem H. The same lubricator, it will thus be seen, may be worked either upon-the gravity or overflow principle.

The modification shown in Fig. 2e1nbodies the overflow principle of feeding, the steamspace S, between the inner and outer shells and the pipe Q, being substantially the same as shown-in Fig. 1. The oil is fed in through a stem, U, controlled by'a valve, V; A petcock,\V, is provided in the cap E, and hollow plugs X y lead into the inner shell or oil-reservoir, and communication is established between them by a glass gage-tube, Z, as shown. This tube serves to indicate the height of oil in the reservoir. The water of condensation may be drawn off by opening a cock, 3, in the lower plug, 3

Having thus described my invention, I claim as new 1. In an overflow oil-cup, an oil-reservoir jacketed and heated by steam, and having an overflow-channel leading into 'the steam-supply, substantially as described.

. 2. In an overflow oil-cup, the combination esaseo of an outer casing or shell, an inner shell constituting an oil-reservoir, arranged within the outer shell with a steam-space between the two, an overflow-channel leading from the oilreservoir to the steam-supply, and a Valve for controlling the discharge through said channel, substantially as described. Y

3. An oil-cup consisting of the following ele ments: the outer shell, the inner steam -j aeketed shell, constituting, with its cap, the oil-reservoir, the hollow valve-stem, through which the reservoir is filled, and means, such as described, for closing the upper end of the hollow valve-stem, substantially as described.

' 4. An oil-cup consisting of the following elements: the outer shell, the inner steam-jacketed shell, constituting, with its cap, the oil-reservoir, and having the opening in its bottom,

with the valve for controlling the discharge.

of oil through said opening in the bottom of the oil-reservoir, whereby oil may be permitted to gravitate through said opening into the steanrspace, substantially as described.

5. An oil-cup consisting'of the following elements: outer shell, the inner steam-jacketed shell having the opening in its bottom, the valve for controlling 'said opening, the overflow-channel connecting the reservoir with the steam-supply, and the valve for controlling said channel, said construction permitting either an overflow-feed through the overflowchannel or a gravity-feed through the opening in the reservoir-bottom, according to the ad justment of the valves, substantially as described.

SAMUEL c. (.ABELL Vitnesses:

M LVILL'E CHURCH, A. S. STEWART. 

